The Westminster government has stepped up negotiations with the DUP in a bid to get its Brexit deal through parliament next week, bringing the Chancellor into talks ahead of a third vote expected on Tuesday.

MPs must decide tomorrow whether the UK crashes out of the EU without a deal after they handed Theresa May another humiliating defeat and robbed the Prime Minister of any control over the Brexit process.

Theresa May’s Brexit deal has been condemned to defeat after Brexiteers in her own party and her DUP allies said changes to the controversial Irish border backstop did not go far enough to win their support.

Attorney General Geoffrey Cox has dealt a serious blow to Theresa May’s hopes of getting her Brexit deal through parliament, writing in new legal advice that the risk of being trapped in the Irish border backstop remains “unchanged” despite last-minute assurances.